Metallic brush for cotton-gins.



(pplication led June 24, 189 9.)

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UNITED SiwmsA PATENT OFFICE.

JOHN H. JENKINS, OF HUBBARD CITY, TEXAS.

METALLIC BRUSH FOR COTTON-GINS.

SPECIFICATION forming part of Letters Patent No. 660,960, dated October 30,1900.

Application filed June 24,1899. Serial No. 721,776. (No model.)

To @ZZ whom it may concern:

Be it known that I, JOHN H. JENKINS, a citizen of the United States, residing at Hubbard City, in the county of Hill and State of Texas, have invented a new and useful Metallic Brush for Cotton-Gins, of which the following is a specification.

My invention relates to improvements in brush-cylinders for cotton-girls; and the object in view is to simplify and cheapen the construction, increase the efciency of the gin, obviate the necessity for frequent renewals of the brushes, so objectionable 4and expensive in ordinary gins employing bristle brushes, and enable the improvements to be used in connection with the brush-cylinders of ordinary gins.

It has heretofore been the common practice, although I may say not the exclusive method, to construct the gin brush-cylinder with a series of cross-rails in which are embedded 'the butt-ends of groups of bristle brushes newing the gin-brushes requires the services.

of a skilled workman and it involves considerable expense, the cost of renewing a brushcylinder for a seventy-saw gin being about twelve dollars at the present time. I overcome these objections by the employment of 'a brush-cylinder constructed with recesses or notches which constitute seats for the crossrails of said cylinder and by the employment of metallic cleaner or brush strips, one to each rail. Each metallic cleaner or brush strip is folded or doubled around the inner edge of the rail and is inserted therewith in .the notched seat of the brush-cylinder, whereby the cleaner or brush strips are secured so firmly with the rails that the parts cannot become accidentally displaced from the brushcylinder even when the latter isdriven at its maximum speed. y

To enable others to understand the invention, I have illustrated my improved brushcylinder in connection with a gin of ordinary construction, the same being shown by the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a sectional elevation of an ordinary gin having my improved brush-cylinder embodied as a part thereof. Fig. 2 is a detailed perspective View of the improved brush-cylinder removed from the gin structure. Fig. 3 is an enlarged detail'sectional elevation of a part of the gin-cylinder, the plane of the section being indicated by the dotted line 3 3 of Fig. 1.

The same nu merals of reference denote like and corresponding parts in each of the several figures of the drawings.

In Fig. 1 of the drawings I haveillustrated so much of an ordinary cottongin as will enable others skilledin the art to understand the application or mode of use of my im proved brush-cylinder, and in this figure the numeral 10 indicates the saw-cylinder; 11, one of the series of saws thereon; 12, the grate fall head or end of the breast; 13, the grate; 14, the Wind-board, and 15 the mote-board.

The improved brush-cylinder of my invention is indicated in its entirety by the numeral 16, and said cylinder is mounted on a shaft which is journaled in proper bearings of the Vgin-stand to lie contiguous to the saw` cylinder. It is usual in the art to employ gearing for propelling the saw-cylinder and the brush-cylinder in opposite directions, so that they will rotate toward each other, and this brush-cylinder is driven at a high speed.

The brush-cylinder of my invention is provided with two or more heads, (indicated by the numerals 18 19,) to which is fastened the covering or shell 20, which may be of sheet metal or other suitable material, while the cylinder heads may be of wood or metal. These heads are secured rmly to the shaft to rotate therewith, and each head is provided with a plurality of radial notches or recesses, the recesses of the head 18 being indicated by the numeral 21, While those for the head 19 are indicated at 21a. Any desired number of recesses may be provided in each head; but in the drawings I have shown each head as having a series of six recesses arranged equidistant one from the other in the peripheral edge of the head. The casing or shell 2O of the cylinder is secured to the heads 18 19,

within the radial seat-notches in the peripheral edges thereof, and the two heads 18 19 are assembled on and secured to the shaft for the seat-notches of one head to aline or coincide with the seat-notches of the other head. The metallic cleaner or brush strips are supported in and secured to the cylinder by the crossrails 22, said rails and cleaner-strips corresponding in number to the notches in each head. The rails 22 are each of a length equal to the cylinder, and in cross-section said rails conform nearly to the Width and depth of the seat-notches in the cylinder-heads. To each rail is secured one of the series of metallic cleaner or brush strips 23, which strip is applied against one face of the strip and has an edge portion thereof doubled or folded at .24 around the inner edge of the cross1ail. The cleaner or brush strip is applied to the cross-rail to embrace at least two of the faces thereof before the rail is fitted in the seatnotch of the cylinderhead, and thus the cleaner-strip is insertible with the cross-rail in the cylinder-heads or removable therewith from said heads. Each metallic cleaner or brush strip extends the proper distance beyond the outer edge of the cross-rail, by which it is secured to the cylinder-heads, and thus the cross-rails may occupya iiush relation to the peripheral edges of the cylinder-heads, while the working or active edges of the cleaner or brush strips extend a proper distance from the circumference of the cylinder, so as to coact properly7 with the saws on the saw-cylinder. Iinay construct the active or working edges of the cleaner or brush strips on the brush-cylinder with continuous unbroken faces or edges; but to increase the efticien cy of the bruslrcylinder it is my practice to provide each cleaner or brush strip with a plurality of notches 25. These notches correspond in number to the saws on the sawcylinder, said notches being disposed in the vertical planes of said saws for the latter to enter the notches in the active edges of the cleaner or brush strips on the revoluble brushcylinder, whereby each cleaner or brush strip is made to sweep in close relation to the peripheral edge and the lateral faces of the saws on the saw-cylinder.

Any suitable means may be employed for fastening the cross-rails and their attached cleaner or brush strips to the cylinder-heads; butin Fig. 3 of the drawings I haveindicated the fasteners 26 in the form of nails, which are driven through the cross-rails and into the cylinder-heads.

I attach especial importance to the construction of the cylinder-heads with the radial seat-notches and to the folding of the cleaner or brush strips around the edges of the crossrails. This construction and arrangement of parts causes the folded edges of the cleanerstrips to be seated within the notches of the cylinder-heads, so that the cross-rails will operate to firmly clamp the cleaner-strips in the cylinder-heads,and thereby form an improved joint connection which wholly overcomes anyr tendency of the cleaner-strips to work loose and become detached from the cylinder even though the latter be driven at its maximum speed. By reason of the high speed of the cylinder 16 I have experienced some difficulty in holding the metallic cleaner or brush strips in place on the cylinder, as it is found that the attachment of the strips to the lateral faces of the cross-rails was not satisfactory because of the tendency of the strips to work loose, due to frictional brushing against the cotton on the teeth of the saws and to the high speed of the cylinder; but the construction and arrangement herein described Wholly overcome this objection.

One of the meritorious features of my invention is its adaptability to the brush-cyh inders of ordinary gins. The metallic clean er or brush strips may be easily fitted to the cross-rails of ordinary gins when the bristle brushes become worn to such an extent as to require replacing, and the cleaner-strips of my invention may be substituted for the worn bristle brushes with ease and expedition and at a considerable saving of cost as compared with the expense of replacing the worn bristles with fresh bristles.

My improvements increase the capacity of the gin for performance of useful work and effect considerable economy in the cost of repairs because it is not necessary to renew the cleaner or brush strips, as they are made of metal and are durable in service.

Changes may be made in the form and proportion of some of the parts, while their essential features are retained and the spirit of the invention embodied. Hence I do not desire to be limited to the precise form of all the parts as shown, reserving the right to vary therefrom.

Having thus described the invention, what I claim isil. A brush-cylinder for cotton-gins, comprising a shaft, heads secured to the opposite extremities thereof and provided With seatnotches laterally extending through the peripheral portions of the heads, the notches of the opposite heads being alined, a series of cross-rails corresponding in contour to butV smaller than the said seat-notches, a plurality of metallic cleaner-strips having inner angularly-bent ends to fit over the inner edges of the said cross-rails, the outer free edges of the said strips being notched at regular intervals, and the cross-rails applied to the inner angular ends of the strips, and fastening devices for securi-ng the cross-rails and strips detachably to the cylinder-head- 2. A brush-cylinder for cotton-gins, comprising a shaft, heads secured to the opposite extremities of said shaft and provided with lateral seat-notches opening out through the periphery of each head, the notches in the opposite heads being in alinement, a series of cross-rails of smaller dimensions than the seat-notches, a plurality of metallic cleaner- IOO IIO

strips having inne angularly-bent ends resecuring the cross-rails and strips detaohably movably fitted in the said seat-notches and to the oylindewheads. against which the said rails are applied, the In testimony that I claim the foregoing as said rails and inner anguiarly-bent ends of my own I have hereto affixed my signature in 5 the strips being unitedly inserted in the seatthe presence of two Witnesses.

notches, the adjacent portions of the strips at one side compensating for the difference JOHN H JENKINS' in dimension between the cross-rail and the Witnesses: seat-notches to provide a sn ug fitting of the J. ROSS COLHOUN, 1o assembled parts, and fastening devices for THEODORE DALTON. 

